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shtirl [24]
2 years ago
10

Ayo can yall help me plzzz

Mathematics
2 answers:
mezya [45]2 years ago
7 0

Answer:

I think it's either Wednesday or Sunday.

Step-by-step explanation:

xxMikexx [17]2 years ago
5 0

Answer: the answer is d Wednesday.

Step-by-step explanation:

hope this helped ya bro! have a good day! :)

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2 – 3х + 5х = 16 — 8х + 8x
IgorLugansk [536]

Answer:

2 – 3х + 5х = 16 — 8х + 8x

2 - 8x = 16

8x = 14,

x = 1.75

3 0
2 years ago
Read 2 more answers
What is the equation of a line parallel to y=4 that passes through point (9,8)
sweet [91]

Step-by-step explanation:

the equation is y=8

check the image above

please brainliest

8 0
2 years ago
If f(x)=3x^2-9 and g(x)=x^2+1 find (f+g)(x)
givi [52]

Answer:

4x^2 -8

Step-by-step explanation:

f(x)=3x^2-9

g(x)=x^2+1

(f+g)(x)=3x^2-9 +x^2+1

Combine like terms

           = 4x^2 -8

5 0
3 years ago
What are the roots of this equation 2x^2+7x-3=0
Ludmilka [50]

Step-by-step explanation:

2x^2+7x-3=0

by doing splitting the middle term we get/ <u>using quadratic eq we get-</u>

Let's solve your equation step-by-step.

2x2+7x−3=0

For this equation: a=2, b=7, c=-3

2x2+7x+−3=0

Step 1: Use quadratic formula with a=2, b=7, c=-3.

x=

−b±√b2−4ac

2a

x=

−(7)±√(7)2−4(2)(−3)

2(2)

x= −7±√73 /4

x= −7 4 + 1 4 √73 or x= −7 4 + −1 4 √73

Answer:

x= −7 4 + 1 4 √73 or x= −7 4 + −1 4 √73

please mark me as the brainliest:)

8 0
3 years ago
Read 2 more answers
A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. The mean is found to be 9.8
svetlana [45]

Answer:

The 99% confidence interval for the true mean number of reproductions per hour for the bacteria is between 9.6 and 10.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.99}{2} = 0.005

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.005 = 0.995, so z = 2.575

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 2.575\frac{2.4}{\sqrt{955}} = 0.2

The lower end of the interval is the sample mean subtracted by M. So it is 9.8 - 0.2 = 9.6 reproductions per hour.

The upper end of the interval is the sample mean added to M. So it is 9.8 + 0.2 = 10 reproductions per hour.

The 99% confidence interval for the true mean number of reproductions per hour for the bacteria is between 9.6 and 10.

8 0
3 years ago
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